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[S390] single-step cleanup

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Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Roland McGrath
2008-01-26 14:11:22 +01:00
committed by Martin Schwidefsky
parent ea29ee16e6
commit 0ac30be461
3 changed files with 27 additions and 16 deletions
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15
arch/s390/kernel/ptrace.c
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@@ -86,13 +86,13 @@ FixPerRegisters(struct task_struct *task)
per_info->control_regs.bits.storage_alt_space_ctl = 0;
}
static void set_single_step(struct task_struct *task)
void user_enable_single_step(struct task_struct *task)
{
task->thread.per_info.single_step = 1;
FixPerRegisters(task);
}
static void clear_single_step(struct task_struct *task)
void user_disable_single_step(struct task_struct *task)
{
task->thread.per_info.single_step = 0;
FixPerRegisters(task);
@@ -107,7 +107,7 @@ void
ptrace_disable(struct task_struct *child)
{
/* make sure the single step bit is not set. */
clear_single_step(child);
user_disable_single_step(child);
}
#ifndef CONFIG_64BIT
@@ -651,7 +651,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;
/* make sure the single step bit is not set. */
clear_single_step(child);
user_disable_single_step(child);
wake_up_process(child);
return 0;
@@ -665,7 +665,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
return 0;
child->exit_code = SIGKILL;
/* make sure the single step bit is not set. */
clear_single_step(child);
user_disable_single_step(child);
wake_up_process(child);
return 0;
@@ -675,10 +675,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
return -EIO;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;
if (data)
set_tsk_thread_flag(child, TIF_SINGLE_STEP);
else
set_single_step(child);
user_enable_single_step(child);
/* give it a chance to run. */
wake_up_process(child);
return 0;